Why are plants unable to grow at the bottom of lakes? a. the water is colder at the bottom. b. sunlight does not reach the bottom. c. groundwater feeds into the bottom. d. less fresh water is found at the bottom.

What is an example of excretion in mammals?

Hormones that bind to plasma proteins

Geographic earth materials modified over time by physical, chemical, and biological processes that serve many functions are considered a) equatorial parent materials b) modified soil horizons c) modified atmospheric materials d) nurtured dominant structures